PERSPECTIVE article
Front. Sens.
Sec. Sensor Devices
This article is part of the Research TopicParticle and radiation sensors developed at INFN-CSN5View all 11 articles
Integrated Waveguide Sources of Squeezed Vacuum for Gravitational Wave Detection and Quantum Metrology
Provisionally accepted
- 1Dipartimento di Fisica, Università di Trento, Trento, Italy
- 2Trento Institute for Fundamental Physics and Applications, University of Trento, Trento, Trentino-Alto Adige/Südtirol, Italy
- 3Dipartimento di Fisica e Astronomia, University of Padua, Padua, Italy
- 4National Institute of Nuclear Physics of Padova, Padova, Italy
- 5University of Trento, Trento, Italy
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Integrated optics is one of the most promising platforms for quantum technologies. Integrated nonlinear waveguides have been used for the generation of quantum states of light for several applications. Here we discuss a project for the generation of squeezed vacuum in periodically poled waveguides made on a lithium niobate substrate. This non-classical optical state has been used for enhancing high precision measurements in gravitational wave detectors. However, in this application bulk sources of squeezed vacuum states have been employed. Integrated optics can provide a more robust and reliable way for the generation of these states which have great potential not only for interferometric GW detectors, but also for other high-precision optical measurements as well as for quantum computing purposes.
Keywords: integrated optics, Squeezed light, Quantum sensing, Lithium niobate, quantumphotonics
Received: 31 Mar 2025; Accepted: 06 Nov 2025.
Copyright: © 2025 Leonardi, Bazzan, Zendri and Lobino. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Mirko Lobino, mirko.lobino@unitn.it
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